1,325 prompts matching "Spot my mistake using the quadratic formula"
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WAEC Prep: Expanding a 3 by 3 determinant along the first row
Act as my WAEC Further Mathematics coach. I am in SS 3. Set me an exam-standard question o
Practice: The sign pattern of the cofactors in a 3 by 3 determinant
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Worked Example: Evaluating a 3 by 3 determinant by the rule of Sarrus
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WAEC Prep: Setting out the coefficient determinant for two simultaneous equations
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Worked Example: Forming the determinant Dy by replacing the second column
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WAEC Prep: The determinant Dz in a system of three unknowns
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through the determinant Dz
WAEC Prep: What Cramer's rule gives when the system is inconsistent
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through what Cramer's rule
Explain Back: What a coefficient determinant of nought says about the system
I have just studied what a coefficient determinant of nought says about the system in my S
Quiz: Arranging the equations in standard form before applying Cramer's rule
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WAEC Prep: The cofactor of a corner entry
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WAEC Prep: Why the cofactor signs alternate
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WAEC Prep: The minor of an entry of a 3 by 3 matrix
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Practice: Turning a minor into a cofactor with the sign rule
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Explain Back: Writing out the full matrix of cofactors
I have just studied writing out the full matrix of cofactors in my SS3 Further Mathematics
WAEC Prep: The adjoint of the identity matrix
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WAEC Prep: The order in which the cofactors are transposed
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WAEC Prep: The adjoint as the transpose of the matrix of cofactors
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Explain Back: Finding the adjoint of a 2 by 2 matrix quickly
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Worked Example: The identity that A times its adjoint gives the determinant times the identity
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WAEC Prep: The inverse of a 2 by 2 matrix with a fractional determinant
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through the inverse of a 2